Ejector condensing apparatus



Feb. 19 1924.

A. a L. SCANES EJECTOR CONDENSIN G APPARATUS Filed Nov. 24 1920 flrlhurldulinleigh qsgfgs A'TTORNEY Patented Feb. 19, 1924.

UNITED STATES Y 1,483,989 PATENT oFnc ARTHUR EDWIN LEIGH SCANE S, OF ASHTON-ON-MERSEY, ENGLAND, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, A CORPORATION 01'! I PENNSYLVANIA.

' EJECTOR CONDENSING APPARATUS.

Application filed November 24, 1920. Serial No. 426,252.

To all whom it may concern:

Be it known that I, ARTHUR EDWIN LEIGH SoANns, a subject of the King of Great Britain and Ireland, and a resident of Strathfield, Harboro Road, Ashton-on-Mersey, in the county of Chester, England, have made a new and useful Invention in Ejector Condensing Apparatus, of which the following is a specification.

This invention relates to apparatus for the form of an ejector utilizing a water jet or jets. The Leblanc rotary ejector and the Koerting ejector are respectively examples of these two types of apparatus, and for convenience will be hereinafter referred to by these names.

It has been found that with ejectors of the Leblanc type, although their air extracting capacity is high, a large amount of power is abosorbed in'rotating the turbine wheel.-

Conversely the power taken by ejectors of the Koerting type is usually comparatively small but the air extracting capacity of this type of ejector, even when provided with multiple nozzles, is low.

The present invention has for its object to provide improved apparatus in which the disadvantages inherent in both the above mentioned types of apparatus are overcome.

According to this invention, the apparatus comprises a central jet of water supplied by means of a reversed turbine wheel of the Leblanc type surrounded by a plurality of jets of water of the Koerting ejector type. By suitably arranging the cones within the ejector the vapor to be condensed is first forced through the plurality of water jets and then such vapor and gases as are not condensed thereby are removed by the water jet furnished by the turbine wheel.

In the accompanying drawing, Fig. l is a sectional elevation somewhat diagram matic of a condensing apparatus constructed in accordance with the invention, and Fig. 2 is a plan of the same.

A casing 1 has at its upper part a flange 2 by means of which it may be connected to an exhaust pipe or other receptacle from which steam or other condensible and noncondensible vapors are to beextracted and condensed or removed. Said casing is supported-on a diffuser 3 and encloses the housing 4'ofa rotary ejector of the well known Leblanc type and an annular chamber 5 provided with a ring of nozzles 6. Injection water is supplied to the annularchamher 5 through the inlet pipe 7. The housing 4 encloses the rotary impeller 8 and the internal water chamber 9 of the Leblanc ejector which are of the ordinary construction, the'impeller 8 beingrotated and the water chamber 9 being supplied with sealing water by any usual means. For convenience of illustrationyonly a few blades 10 are shown on the impellerbut] its entire circumferen'ce will be provided with blades in the customary manner. VVithinthe casing 1 and near its lower part are supported in any suitablemanner an inner ejector cone 11 and an outer cone '12, the jets fromthe ejector nozzles 6 passing into theannular chamber between the cones and the broken water jet indicated at 13 whichisdelivered from-the impeller 8 being received in the inner cone-11.

It will be readily seen that the mixed gases and-vapors from the receptacle will pass down the upper part of the casing 1 and through the water jets from the nozzles 6 and such vapor and gases as are not condensed thereby will be removed by the broken water jet 13, the whole being ulti- Inately forced through the cones into the diffuser 3.

The proportion of water passed through the turbine wheel compared with that passed through the nozzles of the water jets may be varied in accordance with the capacity which it is desired the apparatus shall have for extracting air and non-condensible gases the relative proportion of water passed through the turbine wheel being increased to increase the air extracting capacity of the apparatus.

Where a natural head of water is availto employ a suitable pump for, providing. the necessaryhead; It is sometimes convenient to arrange a centrifugal pump on the same shaft as the turbine wheel, this pump giving-the necessary head to the Water Insome cases, the centrlfugal pump jets. may also be used to prune the reverse turbine when starting.

Having now particularly described and ascertained the naturepfmy saidinventionand in what manner the same is to be perfo rmed l ,declare that What I cla i in i s zvv -1 n en in appa a s he co b n tion, with,a, devicefof the Leblanc rotary ejector, typenthe broken water jet of, which i upplied 1 to a central; cone, of. a plurality or nozzles, the jets from which i are directed into, an an nulan chamber surrounding said central cone,substantially, as and for the,

purpose pecifi d,

2-: ma l i a i hembe a eans delivering a substantially annular stream of,

I fluid through the chamber means fender liveringa broken vwater jet. centrally of, the, nn r eamo fl d; ndm ans, for iting and discharging the jets; and entrained fluidsg from the chamber.

3. In an ejector, a chamber, an, annular, series of jets d scharging into said chamber,, an annular combining tubewithin the cha n her into which the jets-discharge a Leblanc rotary, ejector, arranged tedischarge broken water jet, centrally ofjthe-annularseries of jets; into a central cone and adifiuser;corr -vv municating with the chamber and arranged to receive, the jets.

.- The, m hod: p e u ting. :ge a r im tl wp surc mprw1nge a n ing the gases to be evacuated an annular e m. f} i aen a n a ieny of e e es 'Q t a ile i h nm z rs eamro flu 0f entraining fluidt through said chamber, means for delivering a broken Water jet centrally 0i said annular strearn,.,and means; for uniting and 1 discharging the said 1. stream and/the said: jet together with their en:

trained fluids, from the chamber.

6. In anejector, achamber, means fO I.'--'

delivering a substantially; annular, strea mofi entraining fluid through said. chamber, eans. for; admitting fluid .to be entra ned it said chamber in such manner asto[substane tially surround the said annular; stream, means-for delivering a broken waterjetcen trally pi. said annular stream and means for unitingand discharging-the saidlstream and; the said jet together with their-entrained;

fluids from the chamber.

7. The, method .5 of evacuating gase usK- uids Qm a gi n of 1 W. pre surevcomprising entraining the gaseous fluidsto be evacuated in a hollownstream; of motive,

fluid, discharging. a broken liquid jet interiorly,0f,said. hollow stream, of fmot ive fluid, uniting the stream of motive fluid land; the broken liquid jet togethenwith the entrained fluids, and! dischargingthe united idei t .areg pnq ihi heripre sure-.

n timony whe e f, ,1 h reI-hemuMo subscribed my. am t i a th. day of Nowem:.-.

ber, 1920.;

ARTHUR, EDWIN LEIGHi ESGANES; 

